baber/WOPTO huggingface dataset:
Patent CA-2170670-C (CA)
Title: Method and apparatus for providing interswitch handover in personal communication services systems
Inventor: KLEM RUSSELL D
IPC: H04M3/00
Filed: 1996-02-29
Granted: 1999-12-07
Abstract: The system of the invention provides a method for handling interswitch handovers in a personal communication services (PCS) system. Specifically, the method of the invention designates the original switching system that hosts the radio port control unit (RPCU) that first serves the call as the anchor switch. The anchor switch maintains this status for the duration of the call and is always responsible for setting up the three-way connection to effectuate the interswitch handover regardless of how many additional new switching systems host RPCUs that serve the call as the mobile station moves through the system. The additional new switching systems hosting the new RPCUs always communicate with the anchor switch and the call is always routed from the anchor switch directly to the switching system hosting the RPCU serving the mobile station. Intermediate switches are dropped from the connection when the mobile station exits the areas they serve thereby eliminating the need to maintain connections through prior switching systems.
Patent CA-2175581-C (CA)
Title: Desquamation compositions containing salicylic acid and zwitterionic compounds
Inventor: BISSETT DONALD LYNN
IPC: A61P17/00
Filed: 1994-11-04
Granted: 1999-12-14
Abstract: The subject invention relates to desquamation compositions comprising a combination of salicylic acid and certain zwitterionic surfactants. The subject invention further relates to methods of desquamation in mammalian skin and treating acne in mammalian skin.
Patent CA-2179961-C (CA)
Title: Method for the treatment of waste water
Inventor: NUMATA SHIGEAKI
IPC: C02F1/72
Filed: 1996-06-26
Granted: 2005-04-26
Abstract: A method for the treatment of waste water, which comprises treating waste water containing at least a sulfide-type malodorous substance, in the presence of a transition metal compound and hydrogen peroxide or a hydrogen peroxide-forming compound, wherein at least an iron family element compound and a vanadium family element compound are used as the transition metal compound.
Patent CA-2184611-C (CA)
Inventor: GOULD RONALD MICHAEL
IPC: C10G73/12
Filed: 1995-05-25
Granted: 2000-02-22
Abstract: A process for solvent dewaxing petroleum feedstock to separate crystallized wax from lubricant oil by filtration of a wax/oil/solvent mixture. The feedstock is sequentially cooled and mixed with cold polar solvent to form a wax crystal phase and oil-solvent phase, and the oil-solvent filtrate stream is contacted with solvent permeable selective membrane at low temperature to recover an internal circulating permeate solvent stream and an oil-rich retentate stream containing dewaxed oil product and residual solvent. Improved operation is achieved by splitting the internal circulating solvent stream into multiple cold solvent recycle streams and injecting a plurality of the cold solvent recycle streams into the waxy petroleum feedstock during sequential cooling and mixing.  By initially injecting a cold recycle solvent stream into the waxy petroleum feedstock at a small temperature differential near the wax crystallization temperature, shock cooling a.nd excess small wax crystal formation are avoided.
Patent CA-2186054-C (CA)
Inventor: KONO MASAKATSU
IPC: B60D1/01
Filed: 1996-09-20
Granted: 2004-11-30
Abstract: A hitch structure comprises a support frame adapted to be mounted to a tail portion of a work vehicle, a tube supported crosswise on the support frame and a hitch for connecting a work machine to the work vehicle. The hitch is comprised of an upper jaw plate and a lower jaw plate joined together by means of a pin in such a manner as to be capable of opening and closing actions, whereby the jaw plates can cooperate to hold the tube on the support-frame. The hitch structure thus allows easy mounting and releasing, produces little play, and is free from worries about its parts being lost.
Patent CA-2191509-C (CA)
Inventor: HOLE NORMAN J
IPC: G01N33/28
Filed: 1996-11-28
Granted: 2005-10-11
Abstract: An ignition quality tester includes an unit for repeatedly injecting a precise quantity of fuel under controlled conditions into a combustion chamber where monitored combustion can be carried out. The tester can be used in an in-line feedback arrangement to permit the continual adjustment of a refining process to maintain the cetane number at a desired value.
Patent CA-2198696-C (CA)
Title: Systems and methods for separating high hematocrit red blood cell concentrations
Inventor: DUFF DANIEL H
IPC: B01D61/14
Filed: 1996-05-22
Granted: 2006-05-16
Abstract: Blood separation systems and methods utilize a membrane separation device (5 2) comprising a gap (60) between a microporous membrane (64) and a surface (56) facing the microporous membrane (64), one of the microporous membrane (64) a nd the surface (56) being rotatable relative to the other to cause separation o f whole blood in the gap (60) into plasma and concentrated red blood cells. The systems and methods include an inlet pump element (20) and a drive element (46) coupled to the membrane separation device (52) and the steps of commanding the inlet pump element (20) and the drive element (46) as a function of the known beginning hematocrit value to obtain concentrated red blood cells having a high end hematocrit value that remains substantially constant despite variances in th e known beginning hematocrit value.
Patent CA-2199599-C (CA)
Inventor: RICE DAPHNE J
IPC: C09B57/00
Filed: 1997-03-10
Granted: 2006-05-23
Abstract: This invention relates to a process for the preparation of quinacridone pigments by (a) ~heating, at a temperature of about 80°C to about 145°C, a reaction mixture containing (i) ~2,5-dianilinoterephthalic acid, a 2,5-dianilino-3,6-dihydroterephthalic acid ester, and/or a derivative thereof, (ii) ~about 3 to about 15 parts by weight, per part of component (a)(i), of a dehydrating agent, and (iii) ~about 0.1 to about 15 percent by weight, based on component (a)(i), of one or more non-pigmentary aromatic polycyclic compounds and/or derivatives thereof, with the proviso that if component (a)(i) is a 2,5-dianilino-3,6-dihydroterephthalic acid ester or a derivative thereof, reaction step (a) additionally comprises an oxidation step; (b) ~drowning the reaction mixture from step (a) by adding said reaction mixture to about 3 to about 15 parts by weight, per part of component (a)(i), of a liquid in which the quinacridone pigment is substantially insoluble; (c) ~isolating the quinacridone pigment; (d) ~optionally, conditioning the quinacridone pigment; and (e) ~optionally, blending the resultant pigment with one or more quinacridone derivatives.
Patent CA-2203567-C (CA)
Inventor: PIKE RICHARD DANIEL
IPC: D04H1/54
Filed: 1995-10-04
Granted: 2006-03-14
Abstract: L'invention concerne un milieu filtrant sous forme de nappe comportant des fibres à deux composants non frisées liées par voie autogène, qui contiennent une polyoléfine et un autre polymère thermoplastique possédant des points de fusion différents. Ce milieu filtrant présente une masse volumique comprise entre environ 0,07 g/cm<3> et environ 0,2 g/cm<3>. L'invention se rapporte également à un milieu filtrant thermoformé en trois dimensions, qui présente une masse volumique comprise entre environ 0,07 g/cm<3> et environ 0,5 g/cm<3>.
Patent CA-2205696-C (CA)
Title: Embryonic stem cells
Inventor: KAMON TOSHIO
IPC: C12N5/0735
Filed: 1997-05-20
Granted: 2007-12-11
Abstract: Embryonic stem cells derived from an inbred mouse strain selected from the group consisting of C3H/HeN, C57BL/6N, DBA/1J, and BALB/c strains, for example, C-2 cell having the accession number FERM BP-5933 and C-6 cell having the accession number FERM BP-5934 are disclosed. The embryonic stem cells of the present invention are derived from genetically complete inbred strains, and therefore, they are extremely useful for close genetic researches.  For example, they are useful for the production of knockout mice as well as for analyses of cell genealogical tree and mechanism of embryonic stem cell establishment.
Patent CA-2206351-C (CA)
Inventor: FALCONER GRAEME
IPC: E21B33/068
Filed: 1997-05-28
Granted: 2005-01-04
Abstract: The invention is an assembly which is run into the wellbore to straddle pre-existing control line connections used normally for actuation of a sleeve for a single subsurface safety valve. The lower flapper is closed through the use of one of the control lines. It is then tested against formation pressure to make sure that it holds. Upon determination that the lower flapper is holding, the upper flapper is shut off using the other control line. By adding additional pressure to the control line for the lower sleeve, further movement of the lower sleeve is obtained to urge another sleeve into contact with the upper flapper to provide support for it so that it can be tested from above. Once the two flappers have been tested, uphole assembly in the wellbore can begin through the wellhead in the zone above the tested valves once assembled. Coiled tubing or wireline can be advanced sealingly through the wellhead as the assembly is lowered past the flappers which are now allowed to open. The flapper assembly is eventually removed.
Patent CA-2209916-C (CA)
Inventor: WANG AVERY
IPC: G10L25/90
Filed: 1996-01-11
Granted: 2006-07-18
Abstract: Frequency locked loop is applied to pitch and formant tracking. The input is demodulated (104), low pass filtered (108) and then remodulated (110) using a complex conjugate formed with a feed-forward delay (112). A feedback loop is provided using integration (120 and 124) for adjusting phase shifts. Phase shift is measured using a arctangent function (114).
Patent CA-2216776-C (CA)
Inventor: BURRILL JAMES T
IPC: H01H35/18
Filed: 1997-09-25
Granted: 2007-02-13
Abstract: A float switch having a housing, a pivoting float body and a tube containing mercury. The wires extend from the tube, into pivot arms of the float body, out of apertures within the arms and upwardly out an orifice in the top surface of the housing.  The pivot arms are sealed to prevent ingress of water into the tube. The housing includes dual rows of apertures to lessen the effects of clogging.
Patent CA-2223821-C (CA)
Inventor: SCHMIDT HELMUT
IPC: H01F1/09
Filed: 1996-06-06
Granted: 2008-02-05
Abstract: Magnetic particles with an outer glass surface being essentially poreless or having pores of a diameter of less then 10 nm as well as ferromagnetic particles wi th a glass surface are preferentially useful for the isolation of biological material from samples. They provide a quick and reliable purification.
Patent CA-2226696-C (CA)
Inventor: LEAVITT FREDERICK WELLS
IPC: B01J20/28
Filed: 1998-01-12
Granted: 2002-01-01
Abstract: A vacuum/pressure swing adsorption method for extracting a more preferred gas from a feed mixture of the more preferred gas and a less preferred gas, employs an adsorbent bed which, on an equilibrium basis, exhibits a selective adsorption preference for the more preferred gas. The method comprises the steps of: pressurizing the adsorbent bed from a medium pressure to a high pressure with a flow of the feed mixture to enable the adsorbent bed to adsorb the more preferred gas. Void gas is fed from the adsorbent bed during the pressurizing to a first storage tank. A further flow of the void gas is fed into a second storage tank, while bringing the adsorbent bed to a low pressure.     At about the low pressure, the more preferred gas is desorbed from the adsorbent bed, while the void gas is fed to the adsorbent bed from the second storage tank. The more preferred gas, which is desorbed, provides a product output. Then the void gas is fed from the first storage tank to pressurize the adsorbent bed to about the intermediate pressure and the process is repeated. When the process is used to produce oxygen, the key is the use of desorption purge at a nearly constant pressure that is selected to produce a steady stream of low purity oxygen (30% to 60%), at a pressure in the range of 60 kPa to 20 kPa using oxygen-selective adsorbents.  A further important feature of the invention is the use of an adsorbent that is appropriately oxygen-selective and is based on equilibrium selectivity, instead of rate selectivity.
Patent CA-2230594-C (CA)
Inventor: WEEKS BRUCE V
IPC: F22B37/58
Filed: 1998-02-26
Granted: 2003-01-07
Abstract: A method and apparatus is provided for removing the severed end-portions of boiler tubes installed and retained in a boiler header without consequential boiler header metal damage and in a manner whereby a compression gap of uniform width is machined throughout the length and thickness of each retained boiler tube end-portion selected for removal, the machined boiler tube end-portion is subsequently compressed to significantly close the machined compression gap and reduce the tube end cross-sectional circumference, and the compressed tube end is withdrawn longitudinally from engagement with the boiler header tube-mounting bore.
Patent CA-2236133-C (CA)
Inventor: PURCELL D GLENN
IPC: A61B5/15
Filed: 1998-04-29
Granted: 2004-03-09
Abstract: A blood sampling device (10) is provided with a housing (12), an end cap (60) adapted to be connected to the housing (12), and a lancet (32) which is movable in a lancing direction between a retracted position in which the lancet (32) does not extend outside of the end cap (60) and an extended position in which the lancet (32) is adapted to make a puncture having a depth. The blood sampling device (10) includes an actuator mechanism for causing the lancet (32) to move from they retracted position to the extended position and an attachment mechanism for allowing the end cap (60) to be securely attached to the housing (12) by moving the end cap (60) in a direction parallel to the lancing direction from a removed position in which the end cap (60) is separated from the housing (12) to a secured position in which the end cap (60) is securely attached to the housing (12) and a mechanism for adjusting the puncture depth of the lancet (32).
Patent CA-2236660-C (CA)
Inventor: BELL ROBERT
IPC: B62K27/16
Filed: 1998-05-01
Granted: 2005-01-18
Abstract: A foldable frame and body for a vehicle or trailer is provided. The mechanism for opening and closing the foldable trailer or vehicle comprises a chassis, at least one frame member pivotally mounted to the chassis at a first pivot point, a hinge arm pivotally mounted to the chassis at a second pivot point and a release arm for closing the vehicle/trailer in one movement. The foldable vehicle/trailer is lightweight and may be motorized or human-powered. It could also serve as a trailer for towing behind a bicycle in which one or more young children would sit. Rather than wheels, it could also be mounted on skis.
Patent CA-2238212-C (CA)
Inventor: FUJII ALAN I
IPC: F21V29/15
Filed: 1998-05-22
Granted: 2005-11-22
Abstract: Piercing, heat sink, and reflector modules are detachably connected together to provide a lighting fixture adaptable to low voltage, line voltag e, halogen, fluorescent, incandescent, and other lighting systems. In heat sensitive applications, such as insulated ceilings, a heat conductive basket sleeve is disposed arou nd the heat sink and reflector modules, and the sleeve, heat sink module and reflector module are enclosed within a heat-sealing cover. Heat from the sleeve is conducted to a trim ring externally disposed on the lighting fixture. The lighting fixture permits direct connection to a continuous insulated cable without the requirement of a junction box connection, thereby facilitating installation of the fixture in either new o r existing construction.
Patent CA-2238469-C (CA)
Title: Load strut for a variable geometry nozzle
Inventor: ELORRIAGA JAVIER
IPC: F02K1/78
Filed: 1998-05-25
Granted: 2006-08-22
Abstract: Compression bar for divergent master petals of variable geometry nozzles, of the type which exhibit a system of command constituted by three ring-like pieces, the external ring piece being divided into two half rings, which binds the two half rings and the corresponding divergent master petal, and which may be formed by two bars joined at one end by means of specific or universal joints to the external ring, and joined between themselves, by means of a cylindrical articulation, considerably perpendicular to the plane which contains both bars and by a divergent master petal-binding transition piece, joined to the two bars by means of cylindrical articulations with sufficient looseness to absorb the changes in distance between the ends of the two bars.
Patent CA-2242924-C (CA)
Inventor: SMITH GEORGE A
IPC: C11D1/66
Filed: 1997-01-03
Granted: 2005-05-03
Abstract: A process for the remediation of soil containing volatile organic compounds which comprises the steps of: (1) forming an emulsifier comprising: (a) from about 70 to about 99 % by weight of a sugar surfactant selected from the group consisting of an alkyl polyglycoside, a glucamide, and mixtures thereof; and (b) from about 1 to about 30 % by weight of a nonionic surfactant, other than said sugar surfactant which, when combined with said sugar surfactant, provides a hydrophilic- lipophilic balance of from about 8.0 to about 13.0; (2) mixing said emulsifier with said unwanted contaminants to form a stable emulsion; a nd (3) removing said stable emulsion from said soil.
Patent CA-2245055-C (CA)
Inventor: VOGT PETER
IPC: C07D213/61
Filed: 1990-01-30
Granted: 2003-03-25
Abstract: It has been found that pyridine-2-carboxamides of the formula (see fig.I) wherein R signifies amino or a residue convertible into amino, and pharmaceutically usable acid addition salts of that carboxamide in which R signifies amino can be manufactured in a simple manner and in good yield by reacting 2,5-dichloropyridine in the presence of a palladium-phosphine catalyst with an alkyne of the formula R1-C~CH                      III   wherein R1 signifies hydrogen, lower-alkyl, trimethylsilyl or the group -(R2)(R3)-COH and R2 and R3  each independently signify hydrogen or lower-alkyl or together signify cyclopentyl or cyclohexyl, oxidizing the resulting alkyne to give 5-chloropyridine-2--carboxylic acid and reacting this acid or a reactive functional derivative thereof with an amino compound of the formula (see fig. I) or with carbon monoxide and an amino compound of formula VI or with carbon monoxide and a lower alkanol which is optionally mixed with water and reacting the resulting acid or the resulting ester with an amino compound of formula VI. The compounds of formula I in which R signifies amino are known, reversible and highly active MAO-B inhibitors.
Patent CA-2247758-C (CA)
Title: Improved particle treatment in a toroidal bed reactor
Inventor: DODSON CHRISTOPHER E
IPC: B01J8/24
Filed: 1998-09-18
Granted: 2003-05-27
Abstract: In a process for processing particulate material with a stream of fluid in an annular processing zone, which includes the steps of supplying the particulate material for processing in the zone, discharging processed material from the zone and generating in the zone a circumferentially directed flow of fluid to develop a circulating turbulent band of particles, an improvement to the processing zone which provides a predictable particle flow path both circumferentially and helically of the zone. The improvement comprises directing the flow of fluid to develop a circulating bed with inner bed depth and outer bed depth, a flow of fluid directed at an angle relative to the processing zone base and controlling fluid velocity so that it is greater than the terminal velocity of larger particles point of impact on the bed base and less than the terminal velocity of smaller particles in the superficial space above the bed upper surface.
Patent CA-2249175-C (CA)
Title: Machine for measuring sizes of particles and for determining color differences in a substance
Inventor: ENGEL MICHAEL H
IPC: G01B21/08
Filed: 1998-09-30
Granted: 2000-12-26
Abstract: A machine is described for performing a draw-down operation in which a carriage for supporting a scraper is mounted on the base so as to travel along it, an electric motor is coupled to the carriage for moving it and a scraper is pivotally mounted on said carriage with a means for pushing the scraper against the top of the base with a selectable force.
Patent CA-2250827-C (CA)
Inventor: OHTA SHOZO
IPC: C12N15/09
Filed: 1998-02-10
Granted: 2005-10-18
Abstract: A method for transforming C3 plants which comprises introducing a number of enzymes contributing to the C4 photosynthetic cycle into the C3 plants to thereby impart the C4 cycle thereto. In this method, a gene encoding PEPC and a gene encoding PCK ligated to a gene encoding a transit peptide are introduced into the C3 plants.
Patent CA-2251060-C (CA)
Inventor: WINTER WERNER
IPC: A61K31/00
Filed: 1997-03-22
Granted: 2006-09-12
Abstract: L'invention concerne des promédicaments de la thalidomide, de la formule (I), dans laquelle R représente -CHR<1>-NHR<2> ou bien -(CH2)nCOOH, R<1> représente H ou alkyle C1-C4, R<2> représente H, alkyle C1-C3, C(O)-CH2-NHR<3> ou un groupe protecteur amino, R<3> représente H ou un groupe protecteur amino, et n représente un nombre entier compris entre 2 et 4, sous forme de leurs bases ou sels d'acides physiologiques. L'invention concerne également un procédé de production de ces promédicaments et leur utilisation comme substance active médicamenteuse.
Patent CA-2251203-C (CA)
Title: Athletic equipment attachment
Inventor: MARRON KATHLEEN T
IPC: A61F2/00
Filed: 1998-10-22
Granted: 2003-09-16
Abstract: An athletic equipment attachment for use by persons having a stump arm, such as amputees and persons having congenital birth defects, is described and claimed. The inventive athletic equipment attachment includes a body having a top end with an adjustable opening configured to receive a person's stump arm, and a bottom end with connecting means for either removably or permanently connecting the attachment to the handle of a piece of athletic equipment, such as a field hockey stick, an ice hockey stick, a golf club or the like. The attachment can also be used as a rehabilitative tool or in connection with items for daily use, such as brooms or mops.
Patent CA-2252972-C (CA)
Title: Serum-free production of recombinant proteins and adenoviral vectors
Inventor: COTE M T JOHANNE
IPC: C12N7/00
Filed: 1998-11-26
Granted: 2012-09-18
Abstract: The present invention relates to a method of serum-free production of recombinant proteins and adenoviral vectors; cell lines viable in a serum-free medium and method of obtaining same.